Zbrush texture wrong way around

Right, im using ZBrush to texture a terrain that ive modelled however as you can see, when i go to export it into Unity the texture seems to be placed wrong, as if it has been turned sideways a little too much causing the edges to be black and the green colours in the wrong places.
Please help.

By default ZBrush generates textures flipped vertically for some reason. Just flip them vertically before exporting and it should work ok.